TEST RIG FOR HEAVY DUTY VEHICLE STARTER TESTING WITH HYDRAULIC BREAKING SYSTEM ACM 35
This is simple to use computerized tester designed for real load testing of starter motors from 2.0 up to 4.0 KW (ST-1000) and from 0.4 up to 12 KW (ST-2000) respectively. The tester is capable of simulating any real operating conditions through a precise computer controlled hydraulic loading unit, assuring reliability and accuracy of testing results. The tested starter is quickly and easily placed into position by means of a 3 way adjustable slide, which enables precise meshing of the starter drive with the gear on the loading unit. The drive end housing of the starter motor is fitted on the exchangeable mounting fixture and is safely secured in place by three adjustable eccentric clamping jaws. Once the starter is in place, the operator chooses between free run, load or stall test by shifting of the gear lever into the desired position and starts the testing process by pressing the start button. The tester can be operated in automatic mode for fully automatic testing or in manual mode for taking the performance parameters of sample motors or when specific testing is required. Depending on the selecting type, testing proceeds as follows:
  • Free run test (up to 15,000 RPM)

Battery Voltage, Solenoid Current, Motor Current and Starter RPM are displayed and printed.

  • Load test

The starter motor is tested under load of up to 200 Nm (148 lbft) for ST-2000 and 100 Nm (74 lbft) for ST-1000. The testing process ends with a load release, simulating operating conditions after the engine starts. The voltage drop on the solenoid contacts under load is also measured, which allows to evaluate the quality of teh contacts. The load test can be executed in two versions - short load test and full load test. The short test includes displaying and printing of Load Battery Voltage, Load Current, RPM, Torque, and Output Power. The full test includes all of the above as well as display out of all performance curves.

  • Stall test

By locking the gear of the loading unit the starter motor is tested in stall mode. In stall mode the tester measures maximum torque up to 250 Nm. The test can be made at varius starting conditions by adjusting the power supply, i.e. cold engine starts at extreme winter temperature.

 

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